Type-writer.



I.- M.,SMITH.

YPE WRITER. APPLICATION FILED my 6', 1914.

Patented" fiept. 15, 1914.

2 SHBETS-SHEETL I. 32?? SMITH.

TYPE WRITER.

AIPLIOATION FILE-D MAY 6,1914.

35 1 1 Q5 1 fiatimted Ssapt 15, 19M

2 MEETS-852mm.

JABEZ M. SMITH, 0F MALVERN, ARKANSAS.

TYPE-WRITER.

Specification of Letters Patent.

Patented Sept. 15, 1914:.

Application and May a, 1914. Serial No. 836,742.

To all whom it may concern:

. Be it known that I, JABEZ'M. SMITH, a

citizen of the United States, residing at Malvern, 1n the county of Hot Springs and ,State of Arkansas, have invented a new and useful Typew'riter, of which the following is a specification.

The present invention relates to improvements in typewriters, one object of the invention, being the provision of neumatically or fluid pressure actiiated ineans for returning or shifting the carriage and at the same time actuating the line spacing lever to line space the platen.

A further object of the present invention,-is' the provision of a key actuated valve foncontrolling the supply of pressure fluid to a reciprocating shi t actuating engine, whereby the proper return movement against the action of the spring is imparted to the typewriter carriage, thus relieving the operator of the manual labor necessary to return the carriage when moving it for spacing for a new line. a

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the. precise embof'iment of the invention herein disclosed can-,be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings, Figure 1 is a top plan indiagram of a typewriting machine showing the present invention in operable relation thereto, the cylinder of the pressure actuated device being shown in horizontal section. Fig. 2 is a front elevation of the typewriting machine with the present device shown in operable relation thereto, parts being broken away .to show the relative position of the fluid actuated means. Fig. 3 is an enlarged detail view showing the key lever and the valve for controlling the cutting off and releasing of the pressure fluid.

Fig. 4: is an enlarged detail sectional view through the valve casing Referring to the drawings, the numeral '1 designates the typewriterframe, whlch is indicative of any form of typewriting mar chine, the same being providedwith the transversely movable carriage 2, carrying the rotary platen 3.. In. the, present instance, the piston 4 is connected to the caris provided with the vent port 7 which is permitted to allow the escape of the pressure fluid from the cylinder 6when the carriage is at extreme shifted position and ready for a new line, the parts as shown ,in Fig; 1 being in intermediate position.

A reservoir or tank 8, which is provided with the feeding pipe 9, said pipe 9 either being connected to other air supply or hav ing a pump connection whereby a hand or foot pump may be employed to store air within the tank 8. Leading from the tank 8 is a pipe 10 which extends within the frame of thetypewriting machine and has connected therein, the valve 11, a pipe 12 leading from,the valve 11 to the cylinder 6 atthe opposite end to the port 7, so that the air is permitted to enter the cylinder 6 to move the piston 5 from left to right as viewed in Figs. 1 and 2;

The valve 11 as shown in Fig. 3 is provided with the operating handle 13, which is normally held upwardly so that the valve is held in the position shown in Fig. 4 by means of the spring 1 1 which is connected to the lever 13 and to the frame 1. p

In order to operate the handle13 and open the valve against the tension of the spring 14, a link 15 is connected to the lever 16 intermediate of its pivotal point 18 and ,thekey but-ton 17. Thus it will be seen that as the lever 16 is depressed, the valve 11 is moved to open position and thus permits air to be delivered from the tank 8 into the cylinder to impart movement to the piston 5 from left to right, thepiston when seated in the right hand end of the cylinder 6, being beyond the vent 7, so that the air pressure is thus relieved and passes through the vent 7.

In order to provide a means for operating the line shifting lever 19 when the carriage has been actuatedby the present fluid operated shifting means, an arm 20 is disposed in the path of the shifting lever 19 and is supported from the frame 1 of the typewriting machine, so as to engagethe upturned end of the lever 19 and thus impart the necessary movement thereto to shift the platen 3. Thus at the same time that the carriage and platen is shifted to return position, the line operating lever is operated to present a new line to be printed upon. I

From the foregoing description, it will be evident that the necessary manual labor for shifting or returning the carriage is overcome in the present structure, the desirable cushioning and resilient means being pro-. vided due to the compressed air operating upon the piston 5 for returning or shifting the carriage and platen, the same being controlled from the key board so that the operator does not have to move her hands from proper Writing position to shift the carriage.

A pressure gage may be connected to the reservoir 8, so that the operator may be kept advised at all times, as to the pressure in the reservoir.

What is claimed is: I In a typewriting machine, the combinatilting a piston rod, a piston connected to the free end of said rod, a pneumatic cylinder surrounding the piston and disposed coaxially with the platen, a bracket connected to the free end of the cylinder and to the frame for supporting the cylinder, said cylinder being'provided with an intake port through its lower end and with an air relief port at its opposite end, an air supplying pipe connected to the air supcplying port, an air reservoir connected to sai pipe, a spring closed valve connected in said pipe, and a key actuated lever operable from the key board of the typewriter and connected to the valve for operating the same in opposition to the spring.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature 1n the presence of two witnesses.

JABEZ M. SMITH.

Witnesses A, M. BAKER,

JOHN ALEXANDER. 

